Drtc p0117 dtc code p0117 coolant temp senser low

The coolant temp sensor is #9 in the picture. How hot does it get in degrees F? Are the radiator fan/s running?

No , their arn't two coolant temp. sensors . One near the thermostat housing . The Temp sensor is a input to the PCM / ECM . The PCM / ECM needs the temp info for fuel calculations . The temp gauge on the instrument cluster gets this info over class 2 serial data network Hooking up a factory or professional scan tool that can read sensor data is the easy way to diagnose ,not guessing . Looking at factory service info. an wiring diagrams too see what is what is another way . You have no clue ,take it to a qualified repair shop.

The engine coolant temperature sensor is a thermistor (a resistor which changes value based on temperature) mounted in the engine coolant stream. Low coolant temperature produces a high resistance (100,000 ohms at -40°C/-40°F) while high temperature causes low resistance (70 ohms at 130°C/266°F).
The PCM supplies a 5 volt signal to the engine coolant temperature sensor through a resistor in the PCM and measures the voltage. The voltage will be high when the engine is cold, and low when the engine is hot. By measuring the voltage, the PCM calculates the engine coolant temperature. Engine coolant temperature affects most systems the PCM controls.
The scan tool displays engine coolant temperature in degrees. After engine startup, the temperature should rise steadily to about 90°C (194°F) then stabilize when thermostat opens. If the engine has not been run for several hours (overnight), the engine coolant temperature and intake air temperature displays should be close to each other. A hard fault in the engine coolant sensor circuit should set DTC P0117 or DTC P0118; an intermittent fault should set a DTC P1114 or P1115. The DTC Diagnostic Aids also contains a chart to check for sensor resistance values relative to temperature.
The ECT sensor also contains another circuit which is used to operate the engine coolant temperature gauge located in the instrument panel.

Chevrolet Impala Extended Crank Time Service Engine Soon Light
Did you just replace the coolant temp sensor ? Or diid you diagnose ? Did you view factory service repair info. ?
A/C OFF
Air Temperature Description and Operation

Once engaged, the compressor clutch will be disengaged for the following conditions:
• Throttle position is 100 percent for 10 seconds.
• A/C high side pressure is more than 2951 kPa (428 psi) and will re-engage once the pressure drops below 2068 kPa (300 psi).
• A/C high side pressure is less than 310 kPa (44 psi).
• Evaporator temperature is less than 0°C (32°F)
• Engine coolant temperature (ECT) is more than 123°C (253°F).
• Engine speed is less than 475 RPM.
• Engine speed is more than 6000 RPM.
• PCM detects excessive torque load.
• PCM detects insufficient idle quality.
• If the blower is switched to off.

Did you have any DTC'S - diagnostic trouble codes ? Not A/C off
P0000 code's .
DTC P0116: Engine Coolant Temperature (ECT) Sensor Performance
DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage
DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit High Voltage
DTC P0128: Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

code p 0442 refers to EVAP system so that is unlikely
check the fan operation and if you have a viscous fan hub ( fan clutch ) replace it
if you have electric fans , check coolant temperature sensor for operation , fuses , relay and fans
overheating is from low coolant levels , head gaskets/cracked heads, blocked radiator cores , fins flaking off core tubes, incorrect timing, blocked exhaust( cat converter)problem thermostat, over loading /over speeding, overdrive not engaging
if you over heating is predominately at lights , slow moving traffic or high engine rpms with low speed --check the fan operation and if it is viscous fan hub driven --replace the hub or if electric fans have that circuit checked out

What make vehicle ? some vehicles have two coolant sensors . One for temp. gauge an another one for the ECM / PCM input. Do you have a check engine light lit ?

A DTC will be set if an abnormal reading occurs, P0116 for sensor performance, P0117 low input or

P0118 for a high input. The coolant temperature sensor temperature reading should closely match the

air charge/manifold temperature reading on a scan tool if the engine has not been run for over an hour.
The sensor circuit can be checked for proper voltage using a voltmeter.

try topping it up when cold ,sounds like a air lock

2000 Dodge Dakota idle then dying problem FIXED Atleast my solution

p0300 is usually a random cylinder miss-fire code, and i think that p0117 is coolant temperature sensor? Try replacing the sensor, could also be the reason for the other code, as a malfunctioning coolant temp sensor will affect engine timing.

P0117 Engine Coolant Temp Sensor Circuit Low Input

ECM detects short circuit in wiring or engine coolant temp sensor (G62)

P0117-Engine Coolant Temperature Circuit Low

Possible Causes:

ECT sensor signal circuit is grounded in the wiring harness ECT sensor is damaged or the PCM has failed